A breakthrough in gas diagnosis with a temperature-modulated generic metal oxide gas sensor

Identifying volatile organic compounds by determining their diffusion and surface adsorption parameters in microfluidic channels

“…Different concentrations tested for each target gas are nominally in the range of A c c e p t e d M a n u s c r i p t 5 concentration at each experiment, though, is not of prime concern. More information on the gas chamber and method of VOC concentration control is available in reference [5].…”

“…Such compact size, light weight, durable, rugged, user friendly [4,5] and low cost systems are expected to discriminate among odors and complex gas mixtures [6,7] without time consuming and costly systematic analysis. Sensor arraybased e-nose systems [8,9] satisfy most of the required operational conditions and are, in principle, suitable for these applications, but they generally suffer from the unpredictable [10,11,12] and predictable [13,14] drifts of the array components [15,16], which render the system unreliable.…”

Adsorption sensitivity of graphane decorated with B, N, S, and Al towards HCN: a first-principles study

“…The controlling of air pollution is now regarded as an important area and the monitoring of toxic gases by sensors is a great technological challenge. [1][2][3] Hydrogen cyanide (HCN) vapor is extremely virulent to human beings and animals, because it inhibits the consumption of oxygen by body tissues. 4 A small concentration will result in damage to the health of human beings, 5 and thus it is important to explore effective methods to detect HCN gas.…”

Forming ohmic Ag/SnO2 contacts

“…Layers of SnO 2 and its alloys are vastly used as transparent conductors [1,2] in optoelectronic devices [3,4], as the sensing pellet in the resistive gas sensors [5], and as anode material in rechargeable lithium-ion batteries [6]. Metal/SnO 2 contacts connecting the device structure to the outside circuitry are, almost in all cases, exposed to harsh environmental conditions and/or elevated temperatures [7,8], which necessitate utilization of noble metals.…”